Use the Alarm Tests tab to identify out-of-control conditions.
These rules will trigger alarm indicators. When a condition is met,
data is plotted in red and the alarm condition is shown in a Tool
Tip box. Charts that support alarm indication are XBar, Range,
XBar-R, Sigma, XBar-S, Moving Average, Moving Range, Individual
(Run), C, P, Np, and U.
NOTE: Alarm Rules 1, 4, 6,
and 7 can be used for all charts that support alarms; alarm rules
2, 3, 5, and 8 can be used for XBar, XBar-R, XBar-S, Moving XBar,
and Individual (Run) charts only.
Properties on the Alarm Tests Tab
|
Property
|
Description
|
Values
|
|
Enable
|
Indicates whether to use alarm rules.
|
Selected –
alarm rules are activated and will identify out-of-control
conditions.
Cleared – alarm
rules are disabled.
|
|
Rule 1
|
Indicates whether to use the Three-sigma
rule.
|
Selected – the
Three-sigma rule is activated.
Cleared – the
Three-sigma rule is disabled.
|
|
Rule 2
|
Indicates whether to use the
Three-successive subgroups rule.
|
Selected – the
Three-successive subgroups rule is active. If necessary, change the
the number of out-of-control subgroups (values 1-5) and the total
number of successive subgroups (values 1-5).
Cleared – the
Three-successive subgroups rule is disabled.
|
|
Rule 3
|
Indicates whether to use the Five-successive
subgroups rule.
|
Selected – the
Five-successive subgroups rule is active. If necessary, change the
the number of out-of-control subgroups (values 1-5) and the total
number of successive subgroups (values 1-5). Default is 2 out of
3.
Cleared – the
five-successive subgroups rule is disabled.
|
|
Rule 4
|
Indicates whether to use the Run rule.
|
Selected – the
Run rule is active. If necessary, change the the number of
out-of-control, successive subgroups (values 1-100). Default is
8.
Cleared – the
Run rule is disabled.
|
|
Rule 5
|
Indicates whether to use the Hugging
rule.
|
Selected – the
Hugging rule is active. If necessary, change the number of
successive subgroups (values 1-100). Default is 15.
Cleared – the
Hugging rule is disabled.
|
|
Rule 6
|
Indicates whether to use the Trend rule.
|
Selected – the
Trend rule is active. If necessary, change the he number of
consecutive subgroups (values 1-100). Default is 6.
Cleared – the
Trend rule is disabled.
|
|
Rule 7
|
Indicates whether to use the Zig-Zag
rule.
|
Selected – the
Zig-Zag rule is active. If necessary, change the he number of
consecutive subgroups (values 1-100). Default is 14.
Cleared – the
Zig-Zag rule is disabled.
|
|
Rule 8
|
Indicates whether to use the Wide Groupings
rule.
|
Selected – the
Wide Groupings rule is active. If necessary, change the he number
of consecutive subgroups (values 1-100). Default is 25.
Cleared – the
Wide Groupings rule is disabled.
|
|
Alarm Color
|
The color of the alarm indicator.
|
Any color available to the system.
|
|
Marker Style
|
Specifies a style for the alarm
indicator.
|
None
Rectangle
Oval
Diamond
Triangle
Dot
Point
Character – accompanied by a text box to
enter the specific character you want to display as a marker.
|
|
Fill
|
Indicates whether to fill the alarm
indicator with the selected line color.
|
Selected –
filled with the selected line color.
Cleared –
hollow.
|
See Also
